The Saints won 3-2 against 10-man Arsenal after Sol Campbell was sent off in the 57th minute for a foul on Ecuador striker Agustin Delgado.

The home side went behind to a Dennis Bergkamp goal before James Beattie equalised with a 25-yard free-kick on half-time.

Beattie also converted the penalty from Campbell's misdemeanour and Delgado added a third before Robert Pires got one back for Arsenal.

But Wenger was incensed at the referee's handling of the match and believes it cost his side the chance to extend their lead at the top of the Premiership.

"All three of their goals came from set pieces and all three could be discussed," said Wenger.

"Durkin is Durkin. What can we do about him?"

Campbell will be suspended for Arsenal's meeting with Manchester United on 7 December.

But Wenger insisted the first turning point was the decision to award a free-kick which led to Southampton's first goal.

"I'm very annoyed that we lost the game," said Wenger.

"We had enough chances to have won it, even with all the decisions that went against us.

"I have been in England a long time now and still don't know what makes a sending off.

"But this time it was not the only turning point in the game. The first one was the free-kick for Southampton's first goal.